I meant I could just wait and not max out Sasha'a LP and thus holding off on her acquiring the Girlfriend status in the process until after getting far enough along with Emma.The latter: depending on what you want to do and what you mean by "not maxing her out". It will have no influence on the Emma storyline but for Home Harem and Band Harem you need LP and KP.
And yes, Emma will ask if you have a girlfriend. (If Sam already introduced you as a boyfriend you will have a problem by the way in that you will have to choose between them) If you have (sex slaves, pets and so on also count) you need to admit it.
Doesn't seem to be any real upside to maxing out Sasha's LP because apparently once she gets to near max LP is when she acquires the Girlfriend status so as long as I don't Take Sasha On A Date and move her status to Girlfriend, it sounds like it will make acquiring Emma all the easier, is what I'm gathering from your response as I don't have any slaves or pets or anyone else with the Girlfriend status as of yet either as I was holding off on getting any of them until after acquiring Emma as she seems to be the toughest one to do so with, even if it is primarily due to Samantha.